Grodan Gro-Block Improved Mini-Block, 1.5" - Case of 2250 Select Rockwool Type:GR6.5 Small w/ Hole, Unwrapped, 4" x 4" x 2.5" - Case of 216 Hygroben is a microbial root

Hygroben is a microbial root inoculant composed of 5 different bacillus species that are shown to be physiologically compatible with each other and work together to enhance yield

ultra housings for enhanced performance and durability

Normal pump rotation is CW

Grow-Cal may increase the rate at which calcium carbonate and other forms

Grodan Gro-Block Improved Mini-Block, 1.5" - Case of 2250 Select Rockwool Type:GR6.5 Small w/ Hole, Unwrapped, 4" x 4" x 2.5" - Case of 216 Hygroben is a microbial rootNew and improved stone wool substrate with advanced wetting technology from Grodan Introducing Grodan Gro Blocks Improved, a product specifically engineered to deliver real results for your crops, developed by plant scientists, researchers, and top growers. A core component of the "Precision Growing" philosophy, Grodan Gro Blocks Improved with Advanced Wetting Technology allow you to cultivate more uniform and high quality crops while using less water